ruby-on-rails - ruby rails : Advanced search

Question

我无法理解制作高级搜索表单的最佳方式。我在互联网上进行了很好的搜索，寻找了一些方法，但我无法让它们发挥作用，因为大多数建议都已过时。我已经问了一个问题，但我认为我太具体了，我无法解决我的问题。我想用一个搜索按钮搜索不同的文本框和下拉框。

编辑2:

项目 Controller :

def index
    @projects = Project.all

respond_to do |format|
      format.html # index.html.erb
      format.json { render :json => @projects }
    end
  end

def search
@project_search = Project.search(params[:search]).order(sort_column + ' ' + sort_direction).paginate(:per_page => 2, :page => params[:page])


end




  # GET /projects/1
  # GET /projects/1.json
  def show
    @project = Project.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @project }
    end
  end

  # GET /projects/new
  # GET /projects/new.json
  def new
    @project = Project.new

    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @project }
    end
  end

  # GET /projects/1/edit
  def edit
    @project = Project.find(params[:id])
  end

  # POST /projects
  # POST /projects.json
  def create

    @project = Project.new(params[:project])


    @project.client = params[:new_client] unless params[:new_client].blank?
    @project.exception_pm = params[:new_exception_pm] unless params[:new_exception_pm].blank?
    @project.project_owner = params[:new_project_owner] unless params[:new_project_owner].blank?
    @project.role = params[:new_role] unless params[:new_role].blank?
    @project.industry = params[:new_industry] unless params[:new_industry].blank?
    @project.business_div = params[:new_business_div] unless params[:new_business_div].blank?

    respond_to do |format|
      if @project.save
        format.html { redirect_to @project, notice: 'Project was successfully created.' }
        format.json { render json: @project, status: :created, location: @project }
      else
        format.html { render action: "new" }
        format.json { render json: @project.errors, status: :unprocessable_entity }
      end
    end
  end

  # PUT /projects/1
  # PUT /projects/1.json
  def update
    @project = Project.find(params[:id])

    respond_to do |format|
      if @project.update_attributes(params[:project])
        format.html { redirect_to @project, notice: 'Project was successfully updated.' }
        format.json { head :no_content }
      else
        format.html { render action: "edit" }
        format.json { render json: @project.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /projects/1
  # DELETE /projects/1.json
  def destroy
    @project = Project.find(params[:id])
    @project.destroy

    respond_to do |format|
      format.html { redirect_to projects_url }
      format.json { head :no_content }
    end
  end




private

  helper_method :sort_column, :sort_direction
  def sort_column
    Project.column_names.include?(params[:sort]) ? params[:sort] : "project_name"
  end

  def sort_direction
    %w[asc desc].include?(params[:direction]) ? params[:direction] : "asc"
  end
end

搜索 View :

<h1>Search</h1>

<%= form_tag search_path, method: :get do %>
<%= hidden_field_tag :direction, params[:direction] %>
  <%= hidden_field_tag :sort, params[:sort] %>
  <%= text_field_tag :project_name, params[:project_name] %>
  <%= text_field_tag :client, params[:client] %>
  <%= submit_tag "Search", name: nil %>
<% end %>



<table class = "pretty">
<table border="1">
  <tr>
    <th><%= sortable "project_name", "Project name" %> </th>
    <th><%= sortable "client", "Client" %></th>
    <th>Exception pm</th>
    <th>Project owner</th>
    <th>Tech</th>
    <th>Role</th>
    <th>Industry</th>
    <th>Financials</th>
    <th>Business div</th>
    <th>Status</th>
    <th>Start date</th>
    <th>End date</th>
<% if false %>
    <th>Entry date</th>
    <th>Edited date</th>
    <th>Summary</th>
    <th>Lessons learned</tStackh>
    <th>Customer benifits</th>
    <th>Keywords</th>
    <!th></th>
    <!th></th>
    <!th></th>
<% end %>
  </tr>

<% @project_search.each do |t| %>
  <tr>
    <td><%= t.project_name %></td>
    <td><%= t.client %></td>
    <td><%= t.exception_pm %></td>
    <td><%= t.project_owner %></td>
    <td><%= t.tech %></td>
    <td><%= t.role %></td>
    <td><%= t.industry %></td>
    <td><%= t.financials %></td>
    <td><%= t.business_div %></td>
    <td><%= t.status %></td>
    <td><%= t.start_date %></td>
    <td><%= t.end_date %></td>
<% if false %>
    <td><%= t.entry_date %></td>
    <td><%= t.edited_date %></td>
    <td><%= t.summary %></td>
    <td><%= t.lessons_learned %></td>
    <td><%= t.customer_benifits %></td>
    <td><%= t.keywords %></td>
<% end %>
    <!td><%#= link_to 'Show', project %></td>
    <!td><%#= link_to 'Edit', edit_project_path(project) %></td>
    <!td><%#= link_to 'Destroy', project, method: :delete, data: { confirm: 'Are you sure?' } %></td>
  </tr>
<% end %>
</table>

<br />
<%= will_paginate (@project_search) %>


<%= button_to "Search Again?", search_path, :method => "get" %>

<%# end %>
<%= button_to "Home", projects_path, :method => "get" %>

项目.rb

class Project < ActiveRecord::Base
  attr_accessible :business_div, :client, :customer_benifits, :edited_date, :end_date, :entry_date, :exception_pm, :financials, :industry, :keywords, :lessons_learned, :project_name, :project_owner, :role, :start_date, :status, :summary, :tech

validates_presence_of :business_div, :client, :customer_benifits, :end_date, :exception_pm, :financials, :industry, :keywords, :lessons_learned, :project_name, :project_owner, :role, :start_date, :status, :summary, :tech



def self.search search_term
 return scoped unless search_term.present?
 where find(:all, :conditions => ['project_name OR client LIKE ?', "%#{search_term}%"])
end

end

路线:

FinalApp::Application.routes.draw do
resources :projects
match "search" => "projects#search", :as => :search
root :to => 'projects#index'
end

如您所见，我距离完成应用程序还有一段距离。我正在尝试制作一个搜索表单，该表单将能够搜索以下字段:项目名称、客户、ID、行业、角色、技术、项目所有者、状态、开始日期、结束日期和关键字。搜索表单将包含文本框或下拉菜单，具体取决于用户搜索的字段。我想链接每个字段并一次性搜索它们。之前我只是以project_name和client为例，方便大家看懂我的代码。希望您现在可以看到我正在尝试做的事情。

Answer 1

您可以创建一个名为 search 的新 Controller 。

您的搜索表单:

<%= form_tag search_index_path, method: :get do %>
  <%= text_field_tag :project, params[:project] %>
  <%= text_field_tag :client, params[:client] %>
  <%= submit_tag "Search", name: nil %>
<% end %>

包含在你的 routes.rb 中:

get "search/index"

你的搜索 Controller :

def index
  #store all the projects that match the name searched
  @projects = Project.where("name LIKE ? ", "%#{params[:project]}%")  
  #store all the clients that match the name searched    
  @clients = Client.where("name LIKE ? ", "%#{params[:client]}%")
end

现在您可以在索引 View 中使用 @projects 和 @clients。

请小心，因为如果没有匹配项，这些变量可能会变为 nil。

编辑 - 我假设你有两个模型 Project 和 Client - 如果你不能创建一个新的 Controller ，你可以创建搜索操作在您当前的 Controller 中。

def search
  #store all the projects that match the name searched
  @projects = Project.where("name LIKE ? ", "%#{params[:project]}%")  
  #store all the clients that match the name searched    
  @clients = Client.where("name LIKE ? ", "%#{params[:client]}%")
end

然后您可以在搜索 View 中使用 @projects 和 @clients。

如果您试图在其他地方显示结果(例如 index View )，您只需将上面的内容移动到正确的操作即可。

 def index
  ....
  #store all the projects that match the name searched
  @projects = Project.where("name LIKE ? ", "%#{params[:project]}%")  
  #store all the clients that match the name searched    
  @clients = Client.where("name LIKE ? ", "%#{params[:client]}%")
end

编辑 2 - 好的，您正在尝试通过同一模型中的字段组合进行搜索:

您并更改您的搜索方法以添加这两个字段:

def self.search(search_project, search_client) 
  return scoped unless search_project.present? || search_client.present?
  where(['project_name LIKE ? AND client LIKE ?', "%#{search_project}%", "%#{search_client}%"])
end

但请注意，如果您的 search_project 或 search_client 不存在，|| 将返回范围，您可以根据需要更改为 AND (&&)。

此外，AND 只有在两者匹配时才会返回，我的意思是搜索的组合...如果需要，您也可以将其更改为 OR。

具有搜索表单:

您的搜索表单:

<%= form_tag search_index_path, method: :get do %>
  <%= text_field_tag :project, params[:project] %>
  <%= text_field_tag :client, params[:client] %>
  <%= submit_tag "Search", name: nil %>
<% end %>

然后您的 Controller 必须将组合发送给模型:

@project_search = Project.search(params[:project], params[:client]).all

我认为它会解决问题...